Wednesday, 2020-11-18

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rm_workahh figured it out00:10
rm_workthe nova_api DB stores cell connection strings that need to be updated if the connection string changes at all00:11
rm_workthis seems a little awkward? but I assume it is necessary for some reason to cache this data here00:11
artomrm_work, if you're familiar with why and how cells v2 came about, it makes sense00:13
rm_workyeah so if we cycle the DB password, or the certs move, we need to make sure to update the cells first via `nova-manage cells_v2 update_cell`00:15
artomrm_work, yep00:19
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openstackgerritBrin Zhang proposed openstack/nova master: Cyborg shelve/unshelve support  https://review.opendev.org/72956303:12
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openstackgerritBrin Zhang proposed openstack/nova-specs master: Remove tenant_id  https://review.opendev.org/73724104:33
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openstackgerritXinran WANG proposed openstack/nova-specs master: SRIOV Enabled Nic Support Specification  https://review.opendev.org/74278507:20
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bauzasgood morning Nova08:04
taccoMorning *08:13
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gibio/08:19
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openstackgerritBalazs Gibizer proposed openstack/nova stable/victoria: Add upgrade check about old computes  https://review.opendev.org/76192408:32
openstackgerritBalazs Gibizer proposed openstack/nova stable/victoria: Improve error handling during service level check  https://review.opendev.org/76247108:32
eanderssonIs there a tool to clean up placement entries that no longer exists in nova? :D08:33
eanderssonhttps://github.com/openstack/nova/blob/stable/rocky/nova/compute/resource_tracker.py#L132608:34
eanderssonIt's not something super widespread, but I have 22 computes that have at least one of these ghost allocations.08:35
gibieandersson: $ nova-manage placement audit # https://docs.openstack.org/nova/latest/cli/nova-manage.html08:36
gibieandersson: https://bugs.launchpad.net/nova/+bug/179356908:37
openstackLaunchpad bug 1793569 in OpenStack Compute (nova) "Add placement audit commands" [Wishlist,Fix released] - Assigned to Sylvain Bauza (sylvain-bauza)08:37
eanderssonNice. Guessing that there isn't a back-port on that one. ;D08:37
gibieandersson: there was backport proposals https://review.opendev.org/#/q/status:abandoned+topic:placement-audit-backport08:38
eanderssonThanks yea just found it08:38
eanderssonI'll try it out in the lab08:40
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openstackgerritBalazs Gibizer proposed openstack/nova stable/victoria: Restore retrying the RPC connection to conductor  https://review.opendev.org/76313808:56
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eanderssonWorked great in the lab09:09
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gibieandersson: good to hear that09:11
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lyarwoodMorning09:42
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openstackgerritMerged openstack/nova master: Reproduce bug 1896463 in func env  https://review.opendev.org/75410010:29
openstackbug 1896463 in OpenStack Compute (nova) rocky "evacuation failed: Port update failed : Unable to correlate PCI slot " [Low,In progress] https://launchpad.net/bugs/189646310:29
openstackgerritMerged openstack/nova master: Set instance host and drop migration under lock  https://review.opendev.org/75481510:32
openstackgerritMerged openstack/nova master: [Trivial]Add missing white space in the log message  https://review.opendev.org/76280410:33
openstackgerritMerged openstack/nova master: [docs] Fix a placement client's command  https://review.opendev.org/76266310:33
openstackgerritBalazs Gibizer proposed openstack/nova stable/victoria: Reproduce bug 1896463 in func env  https://review.opendev.org/76315210:35
openstackbug 1896463 in OpenStack Compute (nova) rocky "evacuation failed: Port update failed : Unable to correlate PCI slot " [Low,In progress] https://launchpad.net/bugs/189646310:35
openstackgerritBalazs Gibizer proposed openstack/nova stable/victoria: Set instance host and drop migration under lock  https://review.opendev.org/76315410:38
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openstackgerritBalazs Gibizer proposed openstack/nova master: Revert "Temporarily disable parts of heal port allocation test"  https://review.opendev.org/75599511:36
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stephenfinDoes unshelving a server always result in that server going to ACTIVE or ERROR state?11:41
stephenfinI'm adding a '--wait' option to 'openstack server unshelve' and was checking for 'SHUTOFF' status, but a quick check suggests we don't restore to the original state after unshelving https://review.opendev.org/#/c/763166/1/openstackclient/compute/v2/server.py@371311:42
stephenfinSo I guess I just need to check for 'ACTIVE'?11:43
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sean-k-mooneyi shoudl go to active but if there is an error i dont knwo if it will go back to shelved or error11:49
sean-k-mooneywe wont restore the orgininal state as far as i know11:49
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stephenfinokay, I'll just check for ACTIVE so11:56
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openstackgerritShi Yan proposed openstack/nova master: Fix the instance_uuid for test  https://review.opendev.org/76317112:24
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openstackgerritLee Yarwood proposed openstack/nova-specs master: WIP libvirt: Allow the default machine type to be changed  https://review.opendev.org/76219913:58
aarentsHi nova,14:02
aarentslyarwood: can you confirm, when you can, that those both change are ok ? https://review.opendev.org/#/c/743708/ https://review.opendev.org/#/c/752463/2 thanks !14:03
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gmannstephenfin: sean-k-mooney I agree on full list of hypervisors to project admin if no limit - https://review.opendev.org/#/c/763043/1/specs/wallaby/approved/modernize-os-hypervisors-api.rst@16215:10
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gmannstephenfin: if you can update the other comments I am good on this.15:11
owalshartom, rm_work: FYI there is a better option for DB creds etc... for cell uris: https://docs.openstack.org/nova/latest/user/cells.html#template-urls-in-cell-mappings15:18
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stephenfingmann: Cool, I will respin that shortly15:21
stephenfindansmith: Is 'nova refresh-network' worth porting to OSC?15:21
dansmithstephenfin: isn't that a xen-specific thing?15:22
stephenfinIt uses the os-server-external-events extension15:22
stephenfin"extension"15:22
stephenfinis that XenAPI specific?15:22
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stephenfinsurely not; that's what neutron uses iirc15:22
stephenfinasking you specifically because you authored the novaclient change waaaay back https://review.opendev.org/#/c/74763/15:23
dansmithoh, then I'm thinking of something else15:23
owalshdansmith: re cell nova-conductor still requiring api db for affinity checks, should I assume that will eventually change?15:24
dansmithoh, right, this probably really shouldn't even be a CLI thing, we probably added it there so we could poke it for testing15:24
rm_workowalsh: oooo will take a look, thanks15:24
stephenfinokay, that was my gut feel too; I'll skip it so15:24
stephenfindansmith++ thanks15:25
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dansmithstephenfin: I was thinking of this: https://docs.openstack.org/api-ref/compute/#reset-networking-on-a-server-resetnetwork-action15:26
dansmithnote the "no longer supported by any virt driver" because xen15:26
stephenfinaha, yes, I've done work on that recently15:26
dansmithowalsh: probably not any time soon.. it was hinging on affinity in placement, and I gather that people aren't interested in furthering those goals these days,15:28
dansmithowalsh: so probably no change on the horizon15:28
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owalshdansmith: ack, thanks, so it wouldn't be crazy to use these creds to create the cell mapping when deploying a new cell conductor?15:39
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dansmithowalsh: nope, that's reasonable at the moment I'd say15:40
owalshdansmith: ack, great. Also does metadata api need the api db config even when local_metadata_per_cell=True?15:46
dansmithowalsh: shouldn't, no15:47
dansmithowalsh: yeah, if that's set, we never run the mapping lookup, which is the api hit15:48
dansmithowalsh: so unless there's a bug or something buried deep, that's the intent.. no api db hit if =True15:48
owalshdansmith: ack, yea, didn't initially make sense that local_metadata_per_cell existed when everything else just checks if the api db is configured, but need to support cell conductor & metadata api sharing nova.conf15:49
dansmithowalsh: well, I think metadata was the first thing to need that determination, so we added a conf knob for it specifically.. it's also potentially security-related because the workloads can talk to it, so explicit-ness is good15:53
dansmithowalsh: but we could deprecate that conf knob and actually just honor the presence of the api creds if you think it'd be better for consistency15:53
owalshdansmith: but that wouldn't work in cases where the cell conductor shares nova conf with cell metadata-api15:58
dansmithcell conductor, yeah15:58
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owalshdansmith: which goes back to the recommendation on the ML to follow the devstack approach to conf - it doesn't seem to work when using cell local metadata api...16:01
owalshsince metadata-api always uses nova.conf, never nova-cellN.conf16:02
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dansmithowalsh: but devstack runs a global metadata api right?16:02
owalshdansmith: yup, doesn't seem to support cell local metadata api16:03
dansmithdevstack's goal, of course, is not to support every possible deployment arrangement...16:03
owalshdansmith: indeed, and for CI/dev running multiple cells makes sense but in production it does not...16:03
owalshmultiple cells on the same host that is16:04
dansmithI've lost track of what we're arguing about16:04
owalshdansmith: http://lists.openstack.org/pipermail/openstack-discuss/2020-November/018732.html16:06
owalshI'm saying we can't use a similar strategy to separate files16:06
dansmithowalsh: okay I'm sorry, I've really lost track of who "we" and what the problem is. You're saying "we=tripleo" deploy a metadata per cell and can't, for some reason, point it at the cellN conductor's config file?16:10
owalshdansmith: rpms/debs in particular are the issue, but yes, can't point metadata-api at the conductor's config file16:11
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openstackgerritLee Yarwood proposed openstack/nova-specs master: WIP libvirt: Allow the default machine type to be changed  https://review.opendev.org/76219916:14
dansmithowalsh: okay, I'm not sure why not currently, because we have that other knob16:15
owalshdansmith: nova.conf is hardcoded in wsgi_api.py16:15
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owalshdansmith: TBH it would make a lot more sense to just say: use nova.conf for everything except nova-compute....16:21
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dansmithowalsh: I'm really lost, I'm sorry16:22
dansmithyou can, of course, just use nova.conf for everything,16:22
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dansmithbut if they're all on the same host and you have cell and super conductors, they can't all use the same config file16:23
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bauzasgrmblbl, I get exceptions about RPC API 6.0 that I don't understand...16:29
bauzas"ERROR nova.api.openstack.wsgi oslo_messaging.rpc.client.RPCVersionCapError: Requested message version, 5.0 is incompatible.  It needs to be equal in major version and less than or equal in minor version as the specified version cap 6.0"16:31
bauzasWTF16:31
bauzasdansmith: do you have any idea why the RPC API only supports 6.0 as the minor RPC version while I wrote a 5.12 proxy in https://review.opendev.org/#/c/761452/2 ?16:36
bauzasI got tons of tempest and func tests failing because of this16:37
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bauzasin theory, I should expose 5.x as a valid RPC target thanks to the added service RPC endpoint16:37
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gmannstephenfin: bauzas dansmith can you review this, sample config file fix - https://review.opendev.org/#/c/762721/16:50
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noonedeadpunkhey!17:01
noonedeadpunkhaving a question regarding http://lists.openstack.org/pipermail/openstack-discuss/2020-November/018663.html17:02
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noonedeadpunkto be specific - was trying to provide --config-file for uwsgi via pyargv but nova seems to ignore it...17:03
noonedeadpunkand it indeed works for neutron... so not sure if it's just me having issues or what, as things are set via oslo anyway....17:04
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dansmithnoonedeadpunk: funny you should ask17:39
dansmithnoonedeadpunk: I think it should, I dunno why it doesn't, and I'm about to caffeinate myself and write a tome to the ML thread about it and other things17:40
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openstackgerritsean mooney proposed openstack/nova master: libvirt: delegate ovs plug to os-vif  https://review.opendev.org/60243218:32
sean-k-mooneymelwitt: i hope that adresses your comments ^18:32
sean-k-mooneystephenfin: if you have time to have a look again at ^ it  basicaly the same + some typo fixes and a rebase18:33
melwittthanks18:33
sean-k-mooneybased on your question i set the min verion to 1.15.2 instaed of 1.15.1 since it has imporant bugfixes for linuxbridge and added that to the commit18:34
sean-k-mooney1.15.0 was broken for ovs 1.15.1 fixed that but still was broken in some cases for linux bridge 1.15.2 is what we released with and support on  stable stine in upper constratints18:35
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-openstackstatus- NOTICE: The Gerrit service at review.opendev.org is being restarted quickly as a pre-upgrade sanity check, estimated downtime is less than 5 minutes.18:36
melwittthanks for explaining that, makes sense now. I had been confused by the gap in the release notes and couldn't find the significance of 1.15.118:37
melwittsean-k-mooney: oh, one more question that I had on the review that I think was missed, is this new delegation to os-vif for the plug, does it run during tempest tests in the gate? or is it for a config that is not running in the gate18:39
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sean-k-mooneyoh right i will run in any job using iptables18:41
sean-k-mooneyi think we have on that does that but ill check now18:41
sean-k-mooneythat used to be the default18:41
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sean-k-mooneystill checking look like we change the default in devstack but we have an iptable job in experimental so i can kick that off or add a DNM testing patch on top18:47
sean-k-mooneymelwitt: which would you prefer18:47
melwittsean-k-mooney: whatever is easier18:48
sean-k-mooneyexperimental is eaiser but it was a bunch of resouce so ill do a dnm patch with both the os-vif and neutron iptables tempest job18:49
sean-k-mooneythey are the same but the os-vif on uses master and the neutorn one uses the released version18:49
melwittah ok, sounds cool18:49
sean-k-mooneyim kind of surprised we dont have any iptables testing in nova actully but i guess it has not been the default for a few releases at this point18:50
sean-k-mooneyya even the greade job uses the ovs firewall at this point https://zuul.opendev.org/t/openstack/build/ec9d4bf702c84bcf9ae355ae0a735cd1/log/controller/logs/etc/neutron/plugins/ml2/ml2_conf.ini#29918:51
sean-k-mooneyalthough to be faire we also dont have any ovn testing  so its not surprising18:52
melwittinteresting. so the original bug only affects deployments using iptables. I hadn't realized that18:53
sean-k-mooneyoh wait sorry18:55
sean-k-mooneyi had that backwards18:55
sean-k-mooneyit only affect deployment not using iptables18:55
sean-k-mooneyso ya all the jobs test this18:55
sean-k-mooneyfor iptables ovs already plugs the interface18:55
sean-k-mooneywhen not using iptables libvirt does18:55
sean-k-mooneynow os-vif will always do it regardesll fo if you use iptables or not18:56
sean-k-mooneymelwitt: we fixed it for iptables alreeady via os-vif but we could not fix it via os-vif in this case since os-vif did not do the plugging libvirt did18:56
melwittI see, thanks18:57
sean-k-mooneyfor context the vlan specification defines vlan 4095 as reserved for implemantion use. in ovs its used for the "dead vlan" per the specification swithc whould not forward packets with vlan 4095 so ovs adopted vlan 4095 as a reserved vlan on which all traffic will be droped19:00
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sean-k-mooneyso the mitigation is to place allports on vlan 4095 until they are moved to the tenant vlan by neutron19:00
sean-k-mooneyyou enable that behavior by setting isolate_vif but we cant do it via libvirt since it will conflict with neutron if you set vlan 4095 in the xml19:01
sean-k-mooney* isolate_vif is set in the nova.conf in the os vif plugin section19:02
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sean-k-mooneyso [os_vif_ovs]/isolate_vif=true which i should proably have destack set by default at somepoint19:04
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melwittah cool, thanks for those details, nice context for the fix approach19:04
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sean-k-mooneyanyway to your orginial question all the tempest jobs are exefcuting the code change so i wont submit a DNM patch19:08
melwittsean-k-mooney: is there any change we would see in the logs as a result of the os-vif plug vs the old libvirt plug?19:12
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melwittlooks like in the guest xml the device changes to <interface type="ethernet"> from <interface type="bridge">19:26
sean-k-mooneyyes the xml would be different19:29
sean-k-mooneyand that is in the nova compute log19:29
melwittcool, yeah I am looking at it19:29
sean-k-mooneysorry was away just putting on dinner19:30
melwittnp, I found it :)19:30
sean-k-mooneyhuh i wonder if infra changed something in zuul19:34
sean-k-mooneyits not rendering the xmls correctly anymore19:34
sean-k-mooneyhttps://zuul.opendev.org/t/openstack/build/00ff397ca5374a0b9441036d43ee3416/log/controller/logs/screen-n-cpu.txt#7371 should be the full xml but you can only see it in the raw view19:34
melwittI'm looking at the raw files so I didn't see the zuul thing. but I did notice the UI changed recently in other ways19:34
sean-k-mooneyya i might need to repot that as a bug since you cant link to lines in the raw view19:35
sean-k-mooneyi guess they have an issue with multi line stringes or soemthing19:35
melwitthm yeah, need to ask in -infra19:36
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melwittsean-k-mooney: I'm trying to confirm that the nova-grenade-multinode fails on PS25 is unrelated to the change. I can't tell why the live migrations failed. do you expect there would be any issues with a live migration going from N to N+1 or vice versa during an upgrade wrt to the plugging mechanism?20:41
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sean-k-mooneythe port would be created on ovs twice but that is ok21:13
sean-k-mooneyos-vif would create it  via pre live migate on the new host then libvirt would create it again by deleteing it and readding it21:14
sean-k-mooneythat should not break anything21:14
sean-k-mooneylibvirt basiclaly does ovs-vsctl del-port --if-exist ... ovs-vsctl add-port21:14
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